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DERIVATIVES AND RISK MANAGEMENT ACTIVITIES Table 1 (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Derivatives, Fair Value |  |
Asset Derivatives | $ 79,549 | $ 147,797
Liability Derivatives | (117,130) | (160,889)
Designated as Hedging Instrument |  |
Derivatives, Fair Value |  |
Asset Derivatives | 26,855 | 124,503
Liability Derivatives | (71,225) | (148,990)
Designated as Hedging Instrument | Commodity contracts | Other current assets |  |
Derivatives, Fair Value |  |
Asset Derivatives | 0 | 36,116
Liability Derivatives | 0 | (33,616)
Designated as Hedging Instrument | Commodity contracts | Other long-term assets, net |  |
Derivatives, Fair Value |  |
Asset Derivatives | 25,634 | 86,052
Liability Derivatives | (20,257) | (66,175)
Designated as Hedging Instrument | Commodity contracts | Accrued liabilities |  |
Derivatives, Fair Value |  |
Asset Derivatives | 640 | 0
Liability Derivatives | (24,286) | 0
Designated as Hedging Instrument | Commodity contracts | Other long-term liabilities |  |
Derivatives, Fair Value |  |
Asset Derivatives | 0 | 0
Liability Derivatives | (5,665) | 0
Designated as Hedging Instrument | Interest rate swaps | Other long-term assets, net |  |
Derivatives, Fair Value |  |
Asset Derivatives | 581 | 2,335
Liability Derivatives | 0 | 0
Designated as Hedging Instrument | Interest rate swaps | Accrued liabilities |  |
Derivatives, Fair Value |  |
Asset Derivatives | 0 | 0
Liability Derivatives | (9,796) | (22,009)
Designated as Hedging Instrument | Interest rate swaps | Other long-term liabilities |  |
Derivatives, Fair Value |  |
Asset Derivatives | 0 | 0
Liability Derivatives | (11,221) | (27,190)
Not Designated as Hedging Instrument |  |
Derivatives, Fair Value |  |
Asset Derivatives | 52,694 | 23,294
Liability Derivatives | (45,905) | (11,899)
Not Designated as Hedging Instrument | Commodity contracts | Other current assets |  |
Derivatives, Fair Value |  |
Asset Derivatives | 30,863 | 15,568
Liability Derivatives | (8,654) | (5,956)
Not Designated as Hedging Instrument | Commodity contracts | Other long-term assets, net |  |
Derivatives, Fair Value |  |
Asset Derivatives | 0 | 7,207
Liability Derivatives | 0 | 0
Not Designated as Hedging Instrument | Commodity contracts | Accrued liabilities |  |
Derivatives, Fair Value |  |
Asset Derivatives | 21,831 | 519
Liability Derivatives | (36,377) | (5,943)
Not Designated as Hedging Instrument | Commodity contracts | Other long-term liabilities |  |
Derivatives, Fair Value |  |
Asset Derivatives | 0 | 0
Liability Derivatives | $ (874) | $ 0

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- Definition Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624163-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44C -Subparagraph a -Clause 1 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 205G -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Fair value of derivative liability, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624163-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44C -Subparagraph a -Clause 1 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 205G -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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